Corsair RMx Shift Series PSU Reimagines the Modular PSU

[A Computer Guy]

It looks like it would be particularly nice in a dual chamber case like Lian Li 011D with the connectors facing up.

 

[RainingTacco]

A solution for HDD cage for people who have enough money to actually just buy few SSDs?

 

[trsttte]

You still need the sense wires and the cable and corrector need be able to take the high current. So this one probably doesn't have 12 pins connector. It'll go with long time to market.

2 8pin connectors have the necessary pins to connect a 12vhpwr connector pin for pin (2x8=16 pins vs 12 + 4side bands=16). The 8 pin connector - officially limited by pcie to 150w - can also carry the necessary 300w without any problems and has been doing so for several years - previous corsair power supplies (and other brands as well) already use a single 8 pin on the psu side to plug 2 8pin connectors on the pcie device.

Corsair started selling 12vhpwr cables for their existing supplies early on so I'm sure this one includes one from the get go.

 

[KevBacon]

In some ways this would help and in some ways it wouldn't. Personally, I got tired of working in "smaller" cases and bought a Corsair 5000T so they already have my money anyway.

 

[-The_Mask-]

2 8pin connectors have the necessary pins to connect a 12vhpwr connector pin for pin (2x8=16 pins vs 12 + 4side bands=16). The 8 pin connector - officially limited by pcie to 150w - can also carry the necessary 300w without any problems and has been doing so for several years - previous corsair power supplies (and other brands as well) already use a single 8 pin on the psu side to plug 2 8pin connectors on the pcie device.

Corsair started selling 12vhpwr cables for their existing supplies early on so I'm sure this one includes one from the get go.

No they don't have the necessary pins. You forgetting that the modulair connectors have a standard pinout. Those are Type 3/4 pinout from Corsair. You can't just use those. There need to be an extra connector for the sensor pins and those are clearly not available here.

 

[ThrashZone]

2 8pin connectors have the necessary pins to connect a 12vhpwr connector pin for pin (2x8=16 pins vs 12 + 4side bands=16). The 8 pin connector - officially limited by pcie to 150w - can also carry the necessary 300w without any problems and has been doing so for several years - previous corsair power supplies (and other brands as well) already use a single 8 pin on the psu side to plug 2 8pin connectors on the pcie device.

Corsair started selling 12vhpwr cables for their existing supplies early on so I'm sure this one includes one from the get go.

Hi,
Well technically corsair 2x8 cables are only 6 wires from the psu not 8
The other 2 pins are simple pigtails at the gpu cable end

So really corsair already has 2 x 6 pin cables how conveniently cheap of them

 

[-The_Mask-]

Hi,
Well technically corsair 2x8 cables are only 6 wires from the psu not 8
The other 2 pins are simple pigtails at the gpu cable end

So really corsair already has 2 x 6 pin cables how conveniently cheap of them

Always difficult to count to 8 of course.

Corsair CX750F RGB 750 W Review

Corsair brings RGB lighting to mid-level PSUs with the new CX-F line. The CX750F is the strongest member, achieving satisfactory overall performance. It features a fully modular cable design and comes in two flavors, black or white, accompanied by matching modular cables.

www.techpowerup.com

Not that it matters much. There are only three 12V wires in a 8 pins PEG connectors, others are ground and sense, but literally no one is using sense, everyone just connects it to the ground. So all actually have 5 ground wires in practice.

 

[ThrashZone]

Hi,
That is a custom cable not stock I've seen the stock cables :black: on a r or rx850 which I returned for a evga 850p
It is still funny looking seeing there is still only three wires on one side of it and five on the other side

 

[trsttte]

No they don't have the necessary pins. You forgetting that the modulair connectors have a standard pinout. Those are Type 3/4 pinout from Corsair. You can't just use those. There need to be an extra connector for the sensor pins and those are clearly not available here.

There's no standard on the psu side, every manufacturer does whatever they want (which is a problem honestly, but a different discussion). These are also neither type 3 nor type 4, it's a new type 5 connection.

The 8 pin connector also has sensor pins, both set to ground. As it turns out, ground the 2 pins on the 12vhpwr and you got 600w (1 sense pin from each 8 pin to the sense so you get the same usual 300w per 8 pin on the psu side)

The other 2 pins (power_stbl and card_cbl_pres) are optional and set by the card.

Besides, of course you can use those 8pin connectors otherwise most major manufacturers wouldn't have started selling 12vhpwr cables for their older power supply models almost immediately as it happened. The biggest point of confusion is thinking using the 12vhpwr requires the implementation of the atx3.0 which is not true at all.

Hi,
Well technically corsair 2x8 cables are only 6 wires from the psu not 8
The other 2 pins are simple pigtails at the gpu cable end

So really corsair already has 2 x 6 pin cables how conveniently cheap of them

I don't know what you're referring to, i have a corsair modular psu (rm750) and it has 8 cables as it's supposed to.

Always difficult to count to 8 of course.

Corsair CX750F RGB 750 W Review

Corsair brings RGB lighting to mid-level PSUs with the new CX-F line. The CX750F is the strongest member, achieving satisfactory overall performance. It features a fully modular cable design and comes in two flavors, black or white, accompanied by matching modular cables.

www.techpowerup.com

Not that it matters much. There are only three 12V wires in a 8 pins PEG connectors, others are ground and sense, but literally no one is using sense, everyone just connects it to the ground. So all actually have 5 ground wires in practice.

That's how the sense pins work, you connect them to ground to close the circuit to "sense" the connector is there. if they're left open it "senses" the connector is not connected. In the case of the 12vhpwr they changed that behaviour to also encode the max power available

 

[-The_Mask-]

There's no standard on the psu side, every manufacturer does whatever they want (which is a problem honestly, but a different discussion).

That every manufacturer has there one standard doesn't mean there isn't one. Corsair has there one and some others like BitFenix and XPG are using the same for example.

These are also neither type 3 nor type 4, it's a new type 5 connection.

I'm quite sure there isn't a type 5 (yet).

The 8 pin connector also has sensor pins, both set to ground. As it turns out, ground the 2 pins on the 12vhpwr and you got 600w (1 sense pin from each 8 pin to the sense so you get the same usual 300w per 8 pin on the psu side)

The other 2 pins (power_stbl and card_cbl_pres) are optional and set by the card.

Of course it can be done, it's just not the way you should do it. That's the reason all new PSU's have the new plug also on the modular side, instead of using the same modular connectors.

That's how the sense pins work, you connect them to ground to close the circuit to "sense" the connector is there. if they're left open it "senses" the connector is not connected. In the case of the 12vhpwr they changed that behaviour to also encode the max power available

I know for a fact that that isn't true. If read the ATX spec back in the day... Like I said no one was using the sense pin, everyone just connects it to the ground, so it isn't useful anymore. Maybe Intel even got rid of the sense wire in a later revision.

Hi,
That is a custom cable not stock I've seen the stock cables :black: on a r or rx850 which I returned for a evga 850p
It is still funny looking seeing there is still only three wires on one side of it and five on the other side

View attachment 278920

That's a stock cable, it's litterly from the review which you can find in my post. It's only one with a white cable, because black is more difficult to see. But if you look at any other modern Corsair PSU you can see the same cable with the same 8 wires. Just look at the last Corsair review on TPU: https://www.techpowerup.com/review/corsair-hxi-series-1500-w/2.html Same wires, just black.

The reason you see three wires is because the same modular socket is used for the EPS connector which has four 12V and four ground wires. That's why there are three 12V wires on one side and 5 ground on the other.

 

[trsttte]

That every manufacturer has there one standard doesn't mean there isn't one. Corsair has there one and some others like BitFenix and XPG are using the same for example.

I'm quite sure there isn't a type 5 (yet).

Every manufacturer doing it whatever way they want is the definition of not having a standard, we expect they'll stay consistent with their previous models but that's far from a guarantee. If you look at the images you'll see the PSU labeled as using type5 cables.

Of course it can be done, it's just not the way you should do it.

Why? It's the same functioning principle. The 12 pin connector was not designed thinking about how it would plug on the psu side and dividing it into 2x8 pins allows for easier and less costly psu design because you can spread the current across more area (jonny guru detailed this in his blog thusly

"I had the opportunity to ask a few of the OEMs what they were using for the modular PCB that was currently sporting the 12VHPWR connector on them. The typical answer was 4 layers with 2oz copper. That’s actually quite normal for a PSU PCB. Normally you have multiple connectors spread across a larger area. But now we’re expected to move twice as much power in the same amount of space as a single 8-pin connector. Umm… no thanks. "

I know for a fact that that isn't true. If read the ATX spec back in the day... Like I said no one was using the sense pin, everyone just connects it to the ground, so it isn't useful anymore. Maybe Intel even got rid of the sense wire in a later revision.

That's wrong.

Pages 113 and 125 of the pcie electromechanical spec rev3.0.

Side note, using a simple jumper to a ground in the connector is fine per the spec (bean counters rejoice )

 

[ThrashZone]

That's a stock cable, it's litterly from the review which you can find in my post. It's only one with a white cable, because black is more difficult to see. But if you look at any other modern Corsair PSU you can see the same cable with the same 8 wires. Just look at the last Corsair review on TPU: https://www.techpowerup.com/review/corsair-hxi-series-1500-w/2.html Same wires, just black.

The reason you see three wires is because the same modular socket is used for the EPS connector which has four 12V and four ground wires. That's why there are three 12V wires on one side and 5 ground on the other.

Well at least you see what I was talking about on the image 3x5 wires out on a 2x4 port lol can't say the same about the other fellow it's his own image too

I'm going off a corsair 850w psu 6-7 years ago I returned for a couple reasons I'm not talking about newer models haven't bother with corsair since way back then

So maybe corsair changed or does higher psu's differently but all I can say is none of my evga P series 750-850-1000-1200w psu's wiring is like that
Evga is 2x4 wires out of the psu and 2x6+2x2 slit on the gpu I see that as normal.

 

[cvaldes]

So when do they announce the cases they specifically designed these for?

They won't. As always, it is up to the builder to source compatible parts. And not just the case: GPU, cooling solutions, motherboards, whatever.

There are already existing cases on the market that would accommodate a PSU with side-mounted connectors. I think my Lian Li Lancool II Mesh Performance would handle this PSU.

Of course, depending on the situation, the builder may want to connect all of the PSU cables to the unit first -- before installing it into the case so they don't have worry about clearances or physical access once installed. It's up to the builder to thoughtfully reflect on the process before proceeding.

Nothing new about that. I have the original NZXT H1 case that has a factory installed PSU and the wiring is already connected and prerouted.

 

[-The_Mask-]

Every manufacturer doing it whatever way they want is the definition of not having a standard

That's exacly how standards work.

If you look at the images you'll see the PSU labeled as using type5 cables.

Which image you revering to?

You're talking about this cable right? It clearly says Type 4.

https://www.corsair.com/eu/en/Categories/Products/Accessories-%7C-Parts/PC-Components/Power-Supplies/600W-PCIe-5-0-12VHPWR-Type-4-PSU-Power-Cable/p/CP-8920284

Why? It's the same functioning principle. The 12 pin connector was not designed thinking about how it would plug on the psu side and dividing it into 2x8 pins allows for easier and less costly psu design because you can spread the current across more area (jonny guru detailed this in his blog thusly

Yes I know, it's obvious. And if the modular sockets can take the current it can be done. But you need good modular sockets, because it will be 10 amps per wire when you wan't to connect a 600W cable.

That's wrong.

I'm 100% sure it's not.

Well at least you see what I was talking about on the image 3x5 wires out on a 2x4 port lol can't say the same about the other fellow it's his own image too

Of course because it simply is the only way to do it if you have a 8 pins modular socket used for both the EPS and PEG cables. There simply isn't an other right way to do so. The reason is simple because there are only three 12V wires in a PEG connector, while there are four in a EPS one.

 

[trsttte]

Which image you revering to?

The ones in the article as well as the text "The RMx Shift includes new Corsair type-5 modular cables"

Yes I know, it's obvious. And if the modular sockets can take the current it can be done. But you need good modular sockets, because it will be 10 amps per wire when you wan't to connect a 600W cable.

It's the same amps the 12 pin connector would have to carry in a much smaller space (8.33A but close enough)

 

[-The_Mask-]

The ones in the article as well as the text "The RMx Shift includes new Corsair type-5 modular cables"

Totally missed that, thx.

 

[eidairaman1]

I just know the wire gauges would have to start getting larger with current increases to prevent wire/pin melting/fire (aka 18, 16, 15, etc etc)

 

[R-T-B]

I just know the wire gauges would have to start getting larger with current increases to prevent wire/pin melting/fire (aka 18, 16, 15, etc etc)

That is assuming the same materials.